Tack or nail driving machine.



N0. 66|,797. Patend NOV. I3, 1900. J. M., J., A. J. S.. A. GIMSN. TACK0R NAIL DRIVING MACHINE.

(Application led Nov. 14, 1898.)

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Unirse STATES einen;

JOSIAI-I MENTOR GIMSON, JOSlAH GIMSON, ARTHUR JAMES GTBISON, AND SYDNEYANSELL GIMSON, OF LEICESTER, ENGLAND. Y

TACK OR NAIL DRIVING IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 661,797, dated November13, 1900.

Application led November 14, 1898. Serial No. 696,487. (No model.)

To rtf/ZZ 'wh/0711, it' may concer-n.-

Be it known that we, JOSIAH MENTOR GIM- SON, a resident of No. 100NewWalk, JOSIAH GIMSON, a resident of No.- 14 High eld street, ARTHUR JAMES GIMSON, a resident of No. 54 Highfield street, and SYDNEY ANSELLGIM- soN, a resident of No. 2O Glebe street, Leicester, in the county ofLeicester, England, engineers, have invented certain new and usefulImprovements in Tack or Nail Driving Machines; and we do hereby declarethe following to be a full, clear, and exact description of theinvention, such as willenable others skilled in the art to which itappertains to make the same or make and use the same.

This invention relates more particularly to that class of hand-tackersor self-feeding tack or nail driving apparatus or instrument in whichthe tacks are fed from a reservoir, carrier, or holder along tack slidesor raceways into their upright position to be drivenhome by a rod andplunger.

In the drawings accompanying this speciiicat ion, Figure l is a sideview, partlyin seotion, of the instrument. Fig. 2 is a half-sec tionalfront elevation of same. 3 is a section through the forward end of thetack carrying slides andvnail-carrying device on line X, Fig. l. Fig. 4shows the tack-delivering` contrivances wit-h the nozzle in section online Y, Fig. 2; and Figs. 5 and 6 are sectional views of thecarrying-lever in its two positions for receiving and delivering thetacks or nails ready to be driven down the delivery-nozzle on line Z ofFigs. l and 2.

Similar figures of reference represent like parts in the several views.

The principal objects of this invention and for which the instrument isdesigned are as follows: to provide efficient means for control ling thedelivery of the tacks, to cause the driver-rod to be raised by theupward movement ofthe driver, and to provide for the tacks or nailsfalling directly down the driving-tube onto the work, with their pointsalways in the vertical position in advance of the driver-rod.

The general arrangement and simplicity of the mechanical parts intheconstruction of the instrument make `it strong, so as better towithstand the shock' and vibration it is al- Figs. l and 3.

ways subjected to in continuous working of the machine. g i

In carrying out our invention we construct the nail or tack drivinginstrumentso as to obtain the following` results: The tack slides orraceways are fixed at an inclination from the vertical position of thebody of the tool to allow the nails or tacks to run down in a way thatis usual, whereas the nailsor tacks are generally fed directlyinto thespace where they are acted upon, and various contrivances of a more orless complicated character are used for dividing, positioning, andcontrolling their single delivery. g

According to this present invention the tack-slides are set out of thecenter line of the driver-rod, so that the tacks run down the inclinedraceways not directly into and under the center of the drivers path, buta distance preferably of about the width of the heads of the nails ortacks by providing at the bot-tom (see Fig. 3) a rapid dip which guidesand carries the heads of the nails or tacks. Said dipis followedbyaflattened portion, (seeFigs. l and 3,) these two portions serving toseparate the tacks. From out of the nail carrier or holder l the nailsor tacks fall one after the otherintoa T-formed groove in and down thetack-slides 2, having, as above stated, at the bottom a rapid dip 3, Theend of one of the slides is elongated at` 4, Fig. 3, sufciently toenable one tack to be forced forward, which hangs by its head and itsunder portion free to be caught bythe swinging movement of thecarrying-lever 5 and carried forward by the foot 6, set out from thesaid lever 5, provided with thevertical hole 7, containing the nail ortack to be driven. The face of this projecting piece or foot 6 isresting and turned at right angles to and against the raceway 2 (seeFigs. 5 and 6) for arresting the further movement of the tacks. Thecylindrical body or inner portion S guides the pin 9, that is carried bythe driver-rod l0,- said pin fitting within the elongated slot orcamgroove 11, made in the upper part of the carrying-lever 5. Saidgroove is curved,as shown in Fig. 2, and is cut to the length of thevertical movement of the hand-grip or handle 17` IOO and driver-rod 10.Said lever is fnlcrumed to the cylindrical body or inner portion 8 bythe fulcrum-pin 9a and is caused to swing from side to side on theupward-and-down- Ward movement of the driver-rod 10. The rst position ofthe lever 5 is shown in Fig. 4 of the drawings ready for receiving thenail. The driver-rod 10 being at its highest point allows the foot 6 totake a nail by reason of its being cut out at one side opposite the endof the raceways. (Seen in Figs. Sto 6.) The hand-grip or handle 17inmoving down causes the driver-rod 10 to swing the lever 5 across to theright and the nail is carried over the 13 of the instrument is placedwith its teeth upon the material where it is desired to drive the nailor tack and the handle 17 is given a sharp downward thrust duringthefirst part of its movement, causing the carrying-lever to place a tackin position immediately under the driver-rod 10, the latter portion ofthe movement serving to drive the tack right into the material.

Access to the tack or nail box 1 is obtained for placing the tacks ornails therein through a hole cut out of one of the cups covered by aspring door or trap. (Not shown.)

The operator in using the herein-described also to the top 15 of the armof the bracketV 16, the lower portion of which is rigidly connected tothe tack-slides 2, Fig. 1. The beforementioned cover 8 also serves as aguide for the hand-grip or handle 17, which is suitably` shaped so thatit can be firmly grippedby the hand ofthe operator.

The nail-holder or tack-box 1 is formed or constructed from or by twodished-out disks or cups fitted circularly into the frame 14 of thebracket k16 and movable therein on the central screw or pin 18. Thedisks are connected with thehandle 17 by the spring-links 19, so thatupon the upward or downward movement of the handle the said disks willmove partly around and back again and so cause the nails or tacks to bedistributed.

It will be observed in Fig. 1 that part of the nail-holder or tack-boxis cut away to show the internal arrangements, which consist of a groovearound the periphery of the disks set apart and forming a channel forthe tacks to fall, the steps 20 retarding the back movement of thetacks, so providing a central path in the ring of the frame 14 and whichadmits the stems of the nails or tacks to have an uninterrupted passagedown the tack-slides upon, as before stated, the partial turning of thedisks forming the nail-holder or tack-box 1, ready to be operated uponby the driver 10.

The aforesaid arrangements will be more clearly understood by. recitingthe operations necessary to satisfactorily drive a nail or tack home bya hard tool.

The instrument is grasped by the handle 17 in a vertical or nearlyvertical position, when .the `body 8 will fall by its own weight and thepin 9 and driver-rod 10 causing the tack-carrying lever 5 to move intothe position as before mentioned to receive a tack. The nozzle implementwill obtain relier from any sudden jar to the muscles upon making thedown ward thrust, inasmuch as parts of the machine which it is notabsolutely necessary to make of steel are made of the lighter metals,and therefore will not occasion fatigue.

In using the instrument the person grips the tool opposite thetack-feeding device by the handle and upon making the downward movementthe mechanism is set in motion, which feeds the tacks one at a time, andim- 1n ediately a tack is driven completely into the material.

Having now particularly described the invention and in what manner thesame` is to be perfornied,what we desire to secu re byLet-ters Patentand claim is- Ahand tack or nail driving implement comprising a curvedbracket 16, a circular frame attached thereto, and a raceway 2 attachedto and depen ding from the circular franie,a tackbox or nail-driver 1 inthe form of two dishedout disks or cups, their outer edges fittingwithin the said circular frame, the curved bracket having a top portion15a from which depends a guide-rod 15, a cylindrical body 8 upon whichslides a handle 17, spring-links secured to the handle 17 and connectedwith the saiddisks, a driver-rod 10 attached to the handle, a swingingcarrying-lever 5 having a foot 6, vertical hole 7, a cam-groove 11, thesaid lever being fulcrumed to the cylindrical body S by a pin 9a, a pin9 attached to the driver-rod 10 and engaging the cam-groove of the lever5, and a nozzle v13 provided with a tubular opening 12,substantially asdescribed.

In witness whereof We hereunto affix our signatures in presence of twowitnesses.

JOSIAH MENTOR GIMSON. JOSIAH GIMSON. ARTHUR JAMES GIMSON. SYDNEY ANSELLGIMSON.

Witnesses:

FRED FnLLoWs WIeGINs, GEORGE WILLIAM COLTMAN.

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